(2) In addition, the comptroller may notify of the request any persons who appear to him to be likely to have an interest in the question upon which the opinion is sought.
(3) The comptroller must send a copy of the form and statement filed under rule 93(1) to each person so notified, together with a copy of such other documents filed under rule 93 as he thinks fit.
(4) The comptroller must advertise a request in such manner as he thinks fit.
(5) However, if the request is refused or withdrawn before a notification has been made under paragraph (1)-

(a) the patent holder alone must be notified of the request (and of the fact that it has been refused or withdrawn); and